42999980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{1279}}^1$

素因数の和:1370

約数の個数: 36

約数和(自身を含む): 92628480

約数和(自身を除く): 49628500

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1279, 1681, 2558, 3362, 5116, 6395, 6724, 8405, 12790, 16810, 25580, 33620, 52439, 104878, 209756, 262195, 524390, 1048780, 2149999, 4299998, 8599996, 10749995, 21499990, 42999980]

約数ペア:

[(1, 42999980), (2, 21499990), (4, 10749995), (5, 8599996), (10, 4299998), (20, 2149999), (41, 1048780), (82, 524390), (164, 262195), (205, 209756), (410, 104878), (820, 52439), (1279, 33620), (1681, 25580), (2558, 16810), (3362, 12790), (5116, 8405), (6395, 6724)]